I'm not a fan of letting them cry it out but it sounds like its working for him. Then again, I've read that controlled crying works because babies give up and withdraw, not because they've soothed themselves. Though I doubt that it's either one or the other in every case, all babies are different.

If you think the problem could be over stimulation, you could take him into a quiet room, draw the curtains and play some soft music and sit with him before he begins to cry. Instead of leaving him to cry, you could just sit next to him so at least he can see you, if you haven't tried that already. I don't know. The 2 month age is a really tough age. Could bubs have colic, perhaps?